公开(公告)号：US08595000B2

公开(公告)日：2013-11-26

申请号：US11709255

申请日：2007-02-22

申请人： Kangeun Lee ,  Eunmi Oh ,  Hosang Sung ,  Changyong Son ,  Kihyun Choo ,  Junghoe Kim

发明人： Kangeun Lee ,  Eunmi Oh ,  Hosang Sung ,  Changyong Son ,  Kihyun Choo ,  Junghoe Kim

IPC分类号： G10L19/00 ,  G10L19/12 ,  G10L21/00

CPC分类号： G10L19/12 ,  G10L19/24 ,  G10L2019/0013

摘要： A method and an apparatus to encode and decode a speech signal using a code excited linear prediction (CELP) algorithm. In order to reduce a bit rate without degrading performance in an enhancement layer based on CELP, each of a fixed codebook of a core layer and a fixed codebook of the enhancement layer is divided into a plurality of spaces. The spaces of the fixed codebook of the enhancement layer excludes a space corresponding to a least distorted space determined from among the spaces of the fixed codebook of the core layer are searched.

摘要翻译： 一种使用码激励线性预测（CELP）算法对语音信号进行编码和解码的方法和装置。 为了在基于CELP的增强层中降低比特率而不降低性能的情况下，核心层的固定码本和增强层的固定码本中的每一个被分成多个空格。 增强层的固定码本的空间不包括与核心层的固定码本的空格中确定的最小失真空间相对应的空间。

公开(公告)号：US20070276655A1

公开(公告)日：2007-11-29

申请号：US11709255

申请日：2007-02-22

申请人： Kangeun Lee ,  Eunmi Oh ,  Hosang Sung ,  Changyong Son ,  Kihyun Choo ,  Junghoe Kim

发明人： Kangeun Lee ,  Eunmi Oh ,  Hosang Sung ,  Changyong Son ,  Kihyun Choo ,  Junghoe Kim

IPC分类号： G06F15/00 ,  G06F17/28 ,  G11B11/00

CPC分类号： G10L19/12 ,  G10L19/24 ,  G10L2019/0013

摘要： A method and an apparatus to encode and decode a speech signal using a code excited linear prediction (CELP) algorithm. In order to reduce a bit rate without degrading performance in an enhancement layer based on CELP, each of a fixed codebook of a core layer and a fixed codebook of the enhancement layer is divided into a plurality of spaces. The spaces of the fixed codebook of the enhancement layer excludes a space corresponding to a least distorted space determined from among the spaces of the fixed codebook of the core layer are searched.

摘要翻译： 一种使用码激励线性预测（CELP）算法对语音信号进行编码和解码的方法和装置。 为了在基于CELP的增强层中降低比特率而不降低性能的情况下，核心层的固定码本和增强层的固定码本中的每一个被分成多个空格。 增强层的固定码本的空间不包括与核心层的固定码本的空格中确定的最小失真空间相对应的空间。

公开(公告)号：US08473284B2

公开(公告)日：2013-06-25

申请号：US11097319

申请日：2005-04-04

申请人： Kangeun Lee ,  Hosang Sung ,  Kihyun Choo

发明人： Kangeun Lee ,  Hosang Sung ,  Kihyun Choo

IPC分类号： G10L19/12

CPC分类号： G10L19/07

摘要： A voice encoding/decoding method and apparatus. A voice encoder includes: a quantization selection unit generating a quantization selection signal; and a quantization unit extracting a linear prediction coding (LPC) coefficient from an input signal, converting the extracted LPC coefficient into a line spectral frequency (LSF), quantizing the LSF with a first LSF quantization unit or a second LSF quantization unit based on the quantization selection signal, and converting the quantized LSF into a quantized LPC coefficient. The quantization selection signal selects the first LSF quantization unit or second LSF quantization unit based on characteristics of a synthesized voice signal in previous frames of the input signal.

摘要翻译： 语音编码/解码方法和装置。 语音编码器包括：量化选择单元，生成量化选择信号; 以及量化单元，从输入信号提取线性预测编码（LPC）系数，将所提取的LPC系数转换为线谱频率（LSF），基于所述线频谱频率（LSF）对第一LSF量化单元或第二LSF量化单元量化LSF 量化选择信号，并将量化的LSF转换成量化的LPC系数。 量化选择信号基于输入信号的先前帧中的合成语音信号的特性来选择第一LSF量化单元或第二LSF量化单元。

公开(公告)号：US20060074643A1

公开(公告)日：2006-04-06

申请号：US11097319

申请日：2005-04-04

申请人： Kangeun Lee ,  Hosang Sung ,  Kihyun Choo

发明人： Kangeun Lee ,  Hosang Sung ,  Kihyun Choo

IPC分类号： G10L19/12

CPC分类号： G10L19/07

摘要： A voice encoding/decoding method and apparatus. A voice encoder includes: a quantization selection unit generating a quantization selection signal; and a quantization unit extracting a linear prediction coding (LPC) coefficient from an input signal, converting the extracted LPC coefficient into a line spectral frequency (LSF), quantizing the LSF with a first LSF quantization unit or a second LSF quantization unit based on the quantization selection signal, and converting the quantized LSF into a quantized LPC coefficient. The the quantization selection signal selects the first LSF quantization unit or second LSF quantization unit based on characteristics of a synthesized voice signal in previous frames of the input signal.

摘要翻译： 语音编码/解码方法和装置。 语音编码器包括：量化选择单元，生成量化选择信号; 以及量化单元，从输入信号提取线性预测编码（LPC）系数，将所提取的LPC系数转换为线谱频率（LSF），基于所述线频谱频率（LSF）对第一LSF量化单元或第二LSF量化单元量化LSF 量化选择信号，并将量化的LSF转换成量化的LPC系数。 量化选择信号基于输入信号的先前帧中的合成语音信号的特性来选择第一LSF量化单元或第二LSF量化单元。

公开(公告)号：US08214203B2

公开(公告)日：2012-07-03

申请号：US12659943

申请日：2010-03-25

申请人： Hosang Sung ,  Seungho Choi ,  Kihyun Choo

发明人： Hosang Sung ,  Seungho Choi ,  Kihyun Choo

IPC分类号： G10L11/00 ,  G10L19/14 ,  G10L13/00 ,  G10L13/06 ,  G10L19/00

CPC分类号： G10L19/005 ,  G10L19/07

摘要： A method and an apparatus for recovering a line spectrum pair (LSP) parameter of a spectrum region when frame loss occurs during speech decoding and a speech decoding apparatus adopting the same are provided. The method of recovering an LSP parameter in speech decoding includes: if it is determined that a received speech packet has an erased frame, converting an LSP parameter of a previous good frame (PGF) of the erased frame or LSP parameters of the PGF and a next good frame (NGF) of the erased frame into a spectrum region and obtaining a spectrum envelope of the PGF or spectrum envelopes of the PGF and NGF; recovering a spectrum envelope of the erased frame using the spectrum envelope of the PGF or the spectrum envelopes of the PGF and NGF; and converting the recovered spectrum envelope of the erased frame into an LSP parameter of the erased frame. The method and apparatus can improve the quality of a recovered speech signal, be applied to a variety of technologies, and provide a method of recovering an LSP parameter for development of an algorithm for speech decoding.

摘要翻译： 提供了一种用于在语音解码期间发生帧丢失时恢复频谱区的线谱对（LSP）参数的方法和装置，以及采用该频谱对参数的语音解码装置。 在语音解码中恢复LSP参数的方法包括：如果确定接收到的语音分组具有已擦除的帧，则将已擦除帧的先前好帧（PGF）的LSP参数或PGF的LSP参数和 将擦除的帧的下一个良好帧（NGF）进入频谱区域并获得PGF和NGF的PGF或频谱包络的​​频谱包络; 使用PGF的频谱包络或PGF和NGF的频谱包络来恢复被擦除的帧的频谱包络; 以及将所述已擦除帧的所恢复的频谱包络转换为所述已擦除帧的LSP参数。 该方法和装置可以提高恢复的语音信号的质量，应用于各种技术，并提供一种恢复用于语音解码算法开发的LSP参数的方法。

公开(公告)号：US07765100B2

公开(公告)日：2010-07-27

申请号：US11347429

申请日：2006-02-06

申请人： Hosang Sung ,  Seungho Choi ,  Kihyun Choo

发明人： Hosang Sung ,  Seungho Choi ,  Kihyun Choo

IPC分类号： G10L11/00 ,  G10L19/14 ,  G10L13/00 ,  G10L13/06 ,  G10L19/00

CPC分类号： G10L19/005 ,  G10L19/07

摘要： A method and an apparatus for recovering a line spectrum pair (LSP) parameter of a spectrum region when frame loss occurs during speech decoding and a speech decoding apparatus adopting the same are provided. The method of recovering an LSP parameter in speech decoding includes: if it is determined that a received speech packet has an erased frame, converting an LSP parameter of a previous good frame (PGF) of the erased frame or LSP parameters of the PGF and a next good frame (NGF) of the erased frame into a spectrum region and obtaining a spectrum envelope of the PGF or spectrum envelopes of the PGF and NGF; recovering a spectrum envelope of the erased frame using the spectrum envelope of the PGF or the spectrum envelopes of the PGF and NGF; and converting the recovered spectrum envelope of the erased frame into an LSP parameter of the erased frame. The method and apparatus can improve the quality of a recovered speech signal, be applied to a variety of technologies, and provide a method of recovering an LSP parameter for development of an algorithm for speech decoding.

公开(公告)号：US20100191523A1

公开(公告)日：2010-07-29

申请号：US12659943

申请日：2010-03-25

申请人： Hosang Sung ,  Seungho Choi ,  Kihyun Choo

发明人： Hosang Sung ,  Seungho Choi ,  Kihyun Choo

IPC分类号： G10L11/04

CPC分类号： G10L19/005 ,  G10L19/07

摘要： A method and an apparatus for recovering a line spectrum pair (LSP) parameter of a spectrum region when frame loss occurs during speech decoding and a speech decoding apparatus adopting the same are provided. The method of recovering an LSP parameter in speech decoding includes: if it is determined that a received speech packet has an erased frame, converting an LSP parameter of a previous good frame (PGF) of the erased frame or LSP parameters of the PGF and a next good frame (NGF) of the erased frame into a spectrum region and obtaining a spectrum envelope of the PGF or spectrum envelopes of the PGF and NGF; recovering a spectrum envelope of the erased frame using the spectrum envelope of the PGF or the spectrum envelopes of the PGF and NGF; and converting the recovered spectrum envelope of the erased frame into an LSP parameter of the erased frame. The method and apparatus can improve the quality of a recovered speech signal, be applied to a variety of technologies, and provide a method of recovering an LSP parameter for development of an algorithm for speech decoding.

摘要翻译： 提供了一种用于在语音解码期间发生帧丢失时恢复频谱区的线谱对（LSP）参数的方法和装置，以及采用该频谱对参数的语音解码装置。 在语音解码中恢复LSP参数的方法包括：如果确定接收到的语音分组具有已擦除的帧，则将已擦除帧的先前好帧（PGF）的LSP参数或PGF的LSP参数和 将擦除的帧的下一个良好帧（NGF）进入频谱区域并获得PGF和NGF的PGF或频谱包络的​​频谱包络; 使用PGF的频谱包络或PGF和NGF的频谱包络来恢复被擦除帧的频谱包络; 以及将所述已擦除帧的所恢复的频谱包络转换为所述已擦除帧的LSP参数。 该方法和装置可以提高恢复的语音信号的质量，应用于各种技术，并提供一种恢复用于语音解码算法开发的LSP参数的方法。

公开(公告)号：US20060178872A1

公开(公告)日：2006-08-10

申请号：US11347429

申请日：2006-02-06

申请人： Hosang Sung ,  Seunghe Choi ,  Kihyun Choo

发明人： Hosang Sung ,  Seunghe Choi ,  Kihyun Choo

IPC分类号： G10L19/14

CPC分类号： G10L19/005 ,  G10L19/07

摘要： A method and an apparatus for recovering a line spectrum pair (LSP) parameter of a spectrum region when frame loss occurs during speech decoding and a speech decoding apparatus adopting the same are provided. The method of recovering an LSP parameter in speech decoding includes: if it is determined that a received speech packet has an erased frame, converting an LSP parameter of a previous good frame (PGF) of the erased frame or LSP parameters of the PGF and a next good frame (NGF) of the erased frame into a spectrum region and obtaining a spectrum envelope of the PGF or spectrum envelopes of the PGF and NGF; recovering a spectrum envelope of the erased frame using the spectrum envelope of the PGF or the spectrum envelopes of the PGF and NGF; and converting the recovered spectrum envelope of the erased frame into an LSP parameter of the erased frame. The method and apparatus can improve the quality of a recovered speech signal, be applied to a variety of technologies, and provide a method of recovering an LSP parameter for development of an algorithm for speech decoding.

摘要翻译： 提供了一种用于在语音解码期间发生帧丢失时恢复频谱区的线谱对（LSP）参数的方法和装置，以及采用该频谱对参数的语音解码装置。 在语音解码中恢复LSP参数的方法包括：如果确定接收到的语音分组具有已擦除的帧，则将已擦除帧的先前好帧（PGF）的LSP参数或PGF的LSP参数和 将擦除的帧的下一个良好帧（NGF）进入频谱区域并获得PGF和NGF的PGF或频谱包络的​​频谱包络; 使用PGF的频谱包络或PGF和NGF的频谱包络来恢复被擦除的帧的频谱包络; 以及将所述已擦除帧的所恢复的频谱包络转换为所述已擦除帧的LSP参数。 该方法和装置可以提高恢复的语音信号的质量，应用于各种技术，并提供一种恢复用于语音解码算法开发的LSP参数的方法。

公开(公告)号：US20120232888A1

公开(公告)日：2012-09-13

申请号：US13477461

申请日：2012-05-22

申请人： Hosang Sung ,  Kangeun Lee ,  Seungho Choi

发明人： Hosang Sung ,  Kangeun Lee ,  Seungho Choi

IPC分类号： G10L19/04

CPC分类号： G10L19/0017 ,  G10L19/005 ,  G10L19/06 ,  G10L19/07 ,  G10L19/083 ,  G10L19/12 ,  G10L2019/0002 ,  G10L2019/0016

摘要： An apparatus and method for concealing frame erasure and a voice decoding apparatus and method using the same. The frame erasure concealment apparatus includes: a parameter extraction unit determining whether there is an erased frame in a voice packet, and extracting an excitement signal parameter and a line spectrum pair parameter of a previous good frame; and an erasure frame concealment unit, if there is an erased frame, restoring the excitement signal and line spectrum pair parameter of the erased frame by using a regression analysis from the excitement signal and line spectrum pair parameter of the previous good frame. According to the method and apparatus, by predicting and restoring the parameter of the erased frame through the regression analysis, the quality of the restored voice signal can be enhanced and the algorithm can be simplified.

摘要翻译： 一种用于隐藏帧擦除的装置和方法，以及使用该帧擦除的语音解码装置和方法。 帧擦除隐藏装置包括：参数提取单元，确定语音分组中是否存在被擦除的帧，以及提取先前好帧的兴奋信号参数和线谱对参数; 以及擦除帧隐藏单元，如果存在擦除帧，则通过使用来自先前好帧的兴奋信号和线谱对参数的回归分析来恢复被擦除帧的兴奋信号和线谱对参数。 根据该方法和装置，通过回归分析预测和恢复被擦除的帧的参数，可以提高恢复的语音信号的质量，并且可以简化算法。

公开(公告)号：US20070033023A1

公开(公告)日：2007-02-08

申请号：US11490139

申请日：2006-07-21

申请人： Hosang Sung ,  Sangwook Kim ,  Rakesh Taori ,  Kangeun Lee

发明人： Hosang Sung ,  Sangwook Kim ,  Rakesh Taori ,  Kangeun Lee

IPC分类号： G10L19/02

CPC分类号： G10L19/24 ,  G10L19/0212 ,  G10L25/18

摘要： Provided are a scalable wide-band speech coding/decoding apparatus, method, and medium. An input wide-band speech input signal is first divided into a low-band signal and a high-band signal. The divided low-band signal is then coded using a code excited linear prediction (CELP) method. The divided high-band signal is coded using a harmonic method. A signal representing a difference between a synthetic signal obtained from the low-band and the high band, and a signal input to the low-band and the high-band is then coded using a modified discrete cosine transform (MDCT) method. The coded signal is then multiplexed. The multiplexed signal is then output. Accordingly, high quality speech can be achieved for all layers.

摘要翻译： 提供了一种可扩展的宽带语音编码/解码装置，方法和媒体。 输入宽带语音输入信号首先被分成低频带信号和高频带信号。 然后使用码激励线性预测（CELP）方法对分频的低频带信号进行编码。 分频高频信号采用谐波法编码。 然后，使用修正的离散余弦变换（MDCT）方法对表示从低频带和高频带获得的合成信号之间的差异以及输入到低频带和高频带的信号进行编码的信号。 然后对编码信号进行多路复用。 然后输出复用的信号。 因此，可以实现对所有层的高质量语音。